King E Posted October 4, 2020 Share Posted October 4, 2020 In hydrogen, why cannot electrons enter an empty shell after the K shell is filled? Link to comment Share on other sites More sharing options...
chenbeier Posted October 4, 2020 Share Posted October 4, 2020 How many electrons does hydrogen have? How can the K shell be full? 1 Link to comment Share on other sites More sharing options...
King E Posted October 4, 2020 Author Share Posted October 4, 2020 14 minutes ago, chenbeier said: How many electrons does hydrogen have? How can the K shell be full What I meant to say is can a Hydrogen -2 ion be formed? Link to comment Share on other sites More sharing options...
chenbeier Posted October 4, 2020 Share Posted October 4, 2020 No, the full k shell is helium structure and very stable. So there can no additional electron to L, the same reason you can not make a He- . 1 Link to comment Share on other sites More sharing options...
King E Posted October 4, 2020 Author Share Posted October 4, 2020 16 minutes ago, chenbeier said: No, the full k shell is helium structure and very stable. So there can no additional electron to L, the same reason you can not make a He- . If you bump an electron to H- ion, can't the electron just enter the empty L shell by releasing energy? Link to comment Share on other sites More sharing options...
Sensei Posted October 4, 2020 Share Posted October 4, 2020 Hydrogen anion H- exists in cosmic space.. https://en.m.wikipedia.org/wiki/Hydrogen_anion Link to comment Share on other sites More sharing options...
John Cuthber Posted October 4, 2020 Share Posted October 4, 2020 1 hour ago, King E said: What I meant to say is can a Hydrogen -2 ion be formed? No The repulsion between the two electrons is too large. Link to comment Share on other sites More sharing options...
swansont Posted October 4, 2020 Share Posted October 4, 2020 8 minutes ago, Sensei said: Hydrogen anion H- exists in cosmic space.. https://en.m.wikipedia.org/wiki/Hydrogen_anion Don’t even have to go that far. H- is used in the TRIUMF cyclotron https://fiveyearplan.triumf.ca/teams-tools/520-mev-cyclotron/ But as your link states, there is no bound excited states. Adding a third electron isn’t going to work Link to comment Share on other sites More sharing options...
chenbeier Posted October 4, 2020 Share Posted October 4, 2020 H- is easy to get. Hydrogen react with sodium or other Smalltalk. 2 Na + H2 => 2 NaH. Sodiumhydrid. Link to comment Share on other sites More sharing options...
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